Heavy camel upgrade is fine, yes it is overly cheap compared to things like Halb upgrade but thats because camels are gold units only good against cavalry.
I do however agree that Imperial camels need a buff considering Id take Malians as a camel civ everytime over Indians: +1 melee armor, +1 atk, -20 hp, less investment, cavalier option and Malian light cav > indian hussar.
Its not a suggestion, its comparison to Malian heavy camels. My suggestion would be to give them +1 melee armor (to return some of the power from -1/-1 armor nerf)
They were maybe OP in TG before…when they had 1 more p. armor…now imp camel is basically more expensive zealotry or farimba camel…They have the best camels in castle age…but imp. camels for its price is just worse farimba/zealotry camel…